Vaping is an expression of you and what you enjoy. With that said, just because it's harsh when you turn the wattage up on your variable, doesn't mean the sub ohm builds will be harsh. If it is harsh when you turn your watts up, it could be the pg/vg ratio of your juice, or it could be that the wicks of your tank can't supply that much liquid that quickly so you're getting a little wick burn.
Point being, you will never know if you don't try. You can get a great setup for under $50.00 on MyFreedomSmokes (Chi You with a Patriot RDA) and if you don't like it, someone will snatch that off you really quick.
When I first started vaping, I bought the BeyondVape Spire with Nautilus Tank. When I went to my vape shop here in town and saw the employees dripping, chucking these huge clouds, I thought my lungs could never take that. Low and behold, one of the employees let me try his black copper stingray (an amazing mod if I do say so myself) and I was flabbergasted (funny word) at how smooth it was, how great the flavor was, and how much it made me completely forget about smoking. From there, I was immediately enthralled with vaping, as where with my variable voltage device, I was meh about it.
Good luck in your quest!